above the N. Mararoa Lake. After flowing due south through the Mararoa Lakes for 9 miles, the Mararoa for the next 18 miles of its course flows in a S.W. direction through a finely grassed and well wooded valley; it then bends to the west a little north of the boundary line between the Otago and Southland Provinces; for the next 10 miles of its course it runs nearly due west, running off and on the boundary line during that distance; it then receives the Whitestone Creek, a very considerable tributary that takes its rise near Snowdon, and has a N.W. course of upwards of 20 miles through the Te Anau Downs. The Mararoa, after receiving the Whitestone, suddenly bends to the south, and after a further course of 6 miles S.S.W. it joins the Waiau about 4 miles south of the boundary line. The total length of the Mararoa from its most remote source to its confluence with the Waiau is fifty-six (56) miles.

The Monowai is the outlet of the lake of the same name: the length of the river is 6 miles, and its direction E.N.E.; it joins the Waiau 12 miles below the confluence of the Mararoa. It was in the middle of November I saw the Monowai; it was then nearly a chain wide, and was from eighteen inches to two feet deep, and had a current not less than five (5) miles an hour; the Monowai Lake must therefore receive the drainage of a very considerable extent of country to the west of the Hunter Mountains. This country, as seen in the beginning of November, from the summit of Hindley and from Ardeer Peak, appeared to be very high and mountainous; all the peaks seen were covered with snow.

The Wairaki, Borland, Dean and Lillburn, are streams of from ten to twenty miles in length; they are all dependent on snow, more or less, for their supply, and being so, they are very fluctuating in size.

The other tributaries of the Waiau, not yet mentioned, are those running into the Te Anau and Manapori Lakes; the principal are the Upukerora, Eglinton, Clinton, Worsley, Glaisnock, Doon, and Spey. The Upukerora takes its rise in the Dunton forest, to the east of the Dunton Peaks, and after a S.W. course of upwards of 20 miles, it bends suddenly to the north, and after running in that direction for more than a mile it falls into the Te Anau Lake, at Patience Bay. The Eglinton takes its rise by two branches from the mountains that bound the head of Milford Sound; they unite below the east side of Mount Eglinton, and after flowing for several miles through a deep wooded gorge, the open country occupied by Mr. Hodge is entered, and after a further course of eight (8) miles, the Eglinton falls into the east side of the Te Anau Lake. Its general course from where its branches join to its mouth is S.W. The Clinton, like the Eglinton, takes its rise from the watershed of Milford Sound; its general direction is S. by E.; it enters the Te Anau Lake at its east head. A boat can be taken up the Clinton for 1½ miles, and after that it is only 10 miles to the head of Milford Sound. The Worsley rises near Castle Mount, and flows down a deep wooded gorge, E. by S., to the west head of the Te Anau Lake. The Glaisnock enters at the head of the north fiord, Te Anau, after flowing in a S.E. direction down a narrow, steep wooded gorge. The Doon has its rise near Mary Peaks, and only a few miles from the head of Caswell Sound and George Sound; it flows in an E.S.E direction along a narrow, flat, wooded valley of about one-third mile in width, to the head of the S.W. arm of the middle fiord, Te Anau Lake. The Spey has its rise from the watershed of the West Coast, near the heads of Jail Passage and Breaksea Sound; for the greater part of its course it flows E. by N., through a very precipitous gorge; on emerging from it, the Mica Burn joins it, and after a further course of nearly two miles through a narrow wooded valley, the Spey falls into the head of the west arm of the Manapori Lake.

The Kawarau is the issue of the Wakatipu Lake: it leaves the lake at the base of Peninsula Hill, its exit is obstructed by masses of rock that divide its volume into several parts that take the form of falls when the lake is high. For the first mile or two of its course the current of the Kawarau is sufficiently slow to admit of cattle swimming easily across it, afterwards it becomes more rapid; at the distance of nearly three miles from the lake it is joined by the Shotover, and at a further distance of six miles by the Arrow. Its general direction up to this is E. by N., it then bends towards the south, and at the same place enters an abrupt rocky gorge, through which it has a very tortuous course of 18 miles before entering the Clutha Valley. After a further course of five miles through it, the Kawarau joins the Clutha just before the latter enters the gorge of the Dunstan Mountains. The general direction of the Kawarau is from west to east; its distance in a straight line is 23 miles, following the course of the river it will be 32 miles. The Kawarau drains about the same extent of country as the Upper Clutha River, and as in this case the nature of the watersheds is similar, they may be considered as of nearly equal volume at